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Words related to sighting

sight
S s

  • alidade

    a surveying instrument used in plane-tabling for drawing lines of sight on a distant object and taking angular measurements

  • azimuth bar

    a device used in measuring azimuths, consisting of a bar with a sighting vane at each end,pivoted at its center, and rotating in a horizontal plane around the center of a compass.

  • azimuth circle

    a device for measuring azimuths, consisting of a graduated ring equipped with a sighting vane on each side, which fits concentrically over a compass.

  • back staff

    an obsolete instrument for determining the altitude of the sun by facing away from the sun, sighting upon the horizon, adjusting a cursor until its shadow falls upon the sight through which the horizon appears, and measuring the resulting arc.

  • black swan

    a phenomenon that occurs even though it had been thought to be impossible

  • bomb run

    the part of a bombing mission between the sighting of the target or its identification by electronic instruments and the release of the bombs.
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